کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4504197 1321077 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Winter survival of Harmonia axyridis in The Netherlands
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Winter survival of Harmonia axyridis in The Netherlands
چکیده انگلیسی

Since the establishment of Harmonia axyridis in Europe, populations of native ladybirds have decreased. Overwintering survival is one of the aspects of the biology of H. axyridis that may contribute to its firm establishment in and invasion of a new area. In this study winter survival of five wild H. axyridis populations was assessed under natural and semi-natural conditions, with a focus on the potential influence of location and orientation on winter survival.Overwintering survival of H. axyridis in the Netherlands is high: 70.8–88.2%. When overwintering at one central site, populations sampled at five locations showed statistically significant different mortality rates. Furthermore, winter survival of H. axyridis at the sample sites was higher when beetles were hibernating at the southwestern sides of buildings, where most aggregations of ladybirds were found. Survival was higher at sheltered sites compared to exposed sites.Harmonia axyridis has a comparable or higher overwintering survival than most common native ladybird species. A high overwintering survival results in a large post-hibernation population in spring, leading to a rapid population build-up. Thus, the high winter survival probably contributes to the success of the exotic H. axyridis.

Figure optionsDownload as PowerPoint slideHighlights
► Winter survival of wild populations of the exotic ladybird Harmonia axyridis was assessed.
► In the Netherlands winter survival is high and depends on the population.
► Winter survival is higher at sites orientated between south and west.
► High winter survival contributes to success of exotic H. axyridis.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biological Control - Volume 60, Issue 1, January 2012, Pages 68–76
نویسندگان
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